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yap-6.3/C/gmp_support.c
Vitor Santos Costa ce84e60d08 cosmetic
2015-01-18 01:32:13 +00:00

1758 lines
35 KiB
C

/*************************************************************************
* *
* YAP Prolog *
* *
* Yap Prolog was developed at NCCUP - Universidade do Porto *
* *
* Copyright L.Damas, V.S.Costa and Universidade do Porto 1985-1997 *
* *
**************************************************************************
* *
* File: gmp_support.c *
* Last rev: *
* mods: *
* comments: bignum code *
* *
*************************************************************************/
#include "Yap.h"
#include "Yatom.h"
#include "YapHeap.h"
#include "eval.h"
#if HAVE_STRING_H
#include <string.h>
#endif
#include <wchar.h>
#if USE_GMP
static inline Term
MkBigAndClose(MP_INT *new)
{
Term t = Yap_MkBigIntTerm(new);
mpz_clear(new);
if (t == TermNil) {
return Yap_ArithError(RESOURCE_ERROR_STACK, t, ">>/2");
}
return t;
}
static inline Term
MkRatAndClose(MP_RAT *new)
{
Term t = Yap_MkBigRatTerm(new);
mpq_clear(new);
if (t == TermNil) {
return Yap_ArithError(RESOURCE_ERROR_STACK, t, ">>/2");
}
return t;
}
/* add i + j using temporary bigint new */
Term
Yap_gmp_add_ints(Int i, Int j)
{
MP_INT new;
mpz_init_set_si(&new,i);
if (j > 0) {
mpz_add_ui(&new, &new, j);
} else {
if (j-1 > 0) { /* negative overflow */
mpz_sub_ui(&new, &new, -(j+1));
mpz_sub_ui(&new, &new, 1);
} else {
mpz_sub_ui(&new, &new, -j);
}
}
return MkBigAndClose(&new);
}
Term
Yap_gmp_sub_ints(Int i, Int j)
{
MP_INT new;
Term t;
mpz_init_set_si(&new,i);
if (j > 0) {
mpz_sub_ui(&new, &new, j);
} else {
if (j-1 > 0) { /* negative overflow */
mpz_add_ui(&new, &new, -(j+1));
mpz_add_ui(&new, &new, 1);
} else {
mpz_add_ui(&new, &new, -j);
}
}
return MkBigAndClose(&new);
t = Yap_MkBigIntTerm(&new);
mpz_clear(&new);
return t;
}
Term
Yap_gmp_mul_ints(Int i, Int j)
{
MP_INT new;
mpz_init_set_si(&new,i);
mpz_mul_si(&new, &new, j);
return MkBigAndClose(&new);
}
Term
Yap_gmp_sll_ints(Int i, Int j)
{
MP_INT new;
mpz_init_set_si(&new,i);
mpz_mul_2exp(&new, &new, j);
return MkBigAndClose(&new);
}
/* add i + b using temporary bigint new */
Term
Yap_gmp_add_int_big(Int i, Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new, i);
mpz_add(&new, &new, b);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_add(&new, &new, b);
return MkRatAndClose(&new);
}
}
/* add i + b using temporary bigint new */
void
Yap_gmp_set_bit(Int i, Term t)
{
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_setbit(b, i);
}
/* sub i - b using temporary bigint new */
Term
Yap_gmp_sub_int_big(Int i, Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new, i);
mpz_sub(&new, &new, b);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_sub(&new, &new, b);
return MkRatAndClose(&new);
}
}
/* add i + b using temporary bigint new */
Term
Yap_gmp_mul_int_big(Int i, Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new, i);
mpz_mul(&new, &new, b);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_mul(&new, &new, b);
return MkRatAndClose(&new);
}
}
/* sub i - b using temporary bigint new */
Term
Yap_gmp_sub_big_int(Term t, Int i)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new, i);
mpz_neg(&new, &new);
mpz_add(&new, &new, b);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_sub(&new, b, &new);
return MkRatAndClose(&new);
}
}
/* div i / b using temporary bigint new */
Term
Yap_gmp_div_int_big(Int i, Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
/* cool */
return MkIntTerm(0);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_div(&new, &new, b);
return MkRatAndClose(&new);
}
}
/* div b / i using temporary bigint new */
Term
Yap_gmp_div_big_int(Term t, Int i)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_init_set(&new, b);
if ( (-3 / 2) == -2 ) {
if (i > 0) {
mpz_tdiv_q_ui(&new, &new, i);
} else if (i == 0) {
return Yap_ArithError(EVALUATION_ERROR_ZERO_DIVISOR, MkIntTerm(0), "// /2");
} else {
/* we do not handle MIN_INT */
mpz_tdiv_q_ui(&new, &new, -i);
mpz_neg(&new, &new);
}
} else {
if (i > 0) {
mpz_fdiv_q_ui(&new, &new, i);
} else if (i == 0) {
return Yap_ArithError(EVALUATION_ERROR_ZERO_DIVISOR, MkIntTerm(0), "// /2");
} else {
/* we do not handle MIN_INT */
mpz_fdiv_q_ui(&new, &new, -i);
mpz_neg(&new, &new);
}
}
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_div(&new, b, &new);
return MkRatAndClose(&new);
}
}
/* div b / i using temporary bigint new */
Term
Yap_gmp_div2_big_int(Term t, Int i)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
mpz_init_set(&new, b);
if (i > 0) {
mpz_fdiv_q_ui(&new, &new, i);
} else if (i == 0) {
return Yap_ArithError(EVALUATION_ERROR_ZERO_DIVISOR, MkIntTerm(0), "// /2");
} else {
/* we do not handle MIN_INT */
mpz_fdiv_q_ui(&new, &new, -i);
mpz_neg(&new, &new);
}
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
mpq_init(&new);
mpq_set_si(&new, i, 1L);
mpq_div(&new, b, &new);
return MkRatAndClose(&new);
}
}
/* and i - b using temporary bigint new */
Term
Yap_gmp_and_int_big(Int i, Term t)
{
MP_INT new;
CELL *pt = RepAppl(t);
MP_INT *b;
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "/\\/2");
}
b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new, i);
mpz_and(&new, &new, b);
return MkBigAndClose(&new);
}
/* or i - b using temporary bigint new */
Term
Yap_gmp_ior_int_big(Int i, Term t)
{
MP_INT new;
CELL *pt = RepAppl(t);
MP_INT *b;
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "\\/ /2");
}
b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new, i);
mpz_ior(&new, &new, b);
return MkBigAndClose(&new);
}
#if USE_GMP
// cross-compilers...
#if !defined(HAVE_MPZ_XOR) && !defined(mpz_xor)
static void
mpz_xor(MP_INT *new, MP_INT *r1, MP_INT *r2)
{
MP_INT *n2, *n3;
mpz_new(n2);
mpz_new(n3);
mpz_ior(new, r1, r2);
mpz_com(n2, r1);
mpz_and(n2, n2, new);
mpz_com(n3, r2);
mpz_and(n3, n3, new);
mpz_ior(new, n2, n3);
mpz_clear(n2);
mpz_clear(n3);
}
#endif
#endif
/* or i - b using temporary bigint new */
Term
Yap_gmp_xor_int_big(Int i, Term t)
{
MP_INT new;
CELL *pt = RepAppl(t);
MP_INT *b;
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "#/2");
}
b = Yap_BigIntOfTerm(t);
mpz_init_set_si(&new,i);
mpz_xor(&new, &new, b);
return MkBigAndClose(&new);
}
/* <<< i + b using temporary bigint new */
Term
Yap_gmp_sll_big_int(Term t, Int i)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT new;
MP_INT *b = Yap_BigIntOfTerm(t);
if (i > 0) {
mpz_init(&new);
mpz_mul_2exp(&new, b, i);
} else if (i == 0) {
return t;
} else {
mpz_init(&new);
if (i == Int_MIN) {
CACHE_REGS
return Yap_ArithError(RESOURCE_ERROR_HUGE_INT, MkIntegerTerm(i), "<</2");
}
mpz_fdiv_q_2exp(&new, b, -i);
}
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b = Yap_BigRatOfTerm(t);
if (i > 0) {
mpq_init(&new);
mpq_mul_2exp (&new, b, i);
} else if (i == 0) {
return t;
} else {
mpq_init(&new);
mpq_div_2exp (&new, b, i);
}
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_add_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_add(&new, &new, b2);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b1, bb1;
MP_RAT *b2, bb2;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_add(&new, b1, b2);
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_sub_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_sub(&new, &new, b2);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b1, bb1;
MP_RAT *b2, bb2;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_sub(&new, b1, b2);
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_mul_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_mul(&new, &new, b2);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b1, bb1;
MP_RAT *b2, bb2;
int f1 = FALSE, f2 = FALSE;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
f1 = TRUE;
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
f2 = TRUE;
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_mul(&new, b1, b2);
if (f1) mpq_clear(b1);
if (f2) mpq_clear(b2);
return MkRatAndClose(&new);
}
}
/* div i / b using temporary bigint new */
Term
Yap_gmp_div_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
if ( (-3 / 2) == -2 ) {
mpz_tdiv_q(&new, &new, b2);
} else {
mpz_fdiv_q(&new, &new, b2);
}
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b1, bb1;
MP_RAT *b2, bb2;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_div(&new, b1, b2);
return MkRatAndClose(&new);
}
}
/* div i div b using temporary bigint new */
Term
Yap_gmp_div2_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_fdiv_q(&new, &new, b2);
return MkBigAndClose(&new);
} else {
MP_RAT new;
MP_RAT *b1, bb1;
MP_RAT *b2, bb2;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_div(&new, b1, b2);
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_and_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_and(&new, &new, b2);
return MkBigAndClose(&new);
} else {
if (pt1[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t1, "/\\/2");
}
return Yap_ArithError(TYPE_ERROR_INTEGER, t2, "/\\/2");
}
}
Term
Yap_gmp_ior_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_ior(&new, &new, b2);
return MkBigAndClose(&new);
} else {
if (pt1[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t1, "\\/ /2");
}
return Yap_ArithError(TYPE_ERROR_INTEGER, t2, "\\/ /2");
}
}
Term
Yap_gmp_xor_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_xor(&new, &new, b2);
return MkBigAndClose(&new);
} else {
if (pt1[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t1, "\\/ /2");
}
return Yap_ArithError(TYPE_ERROR_INTEGER, t2, "\\/ /2");
}
}
Term
Yap_gmp_mod_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init(&new);
mpz_fdiv_r(&new, b1, b2);
return MkBigAndClose(&new);
} else {
if (pt1[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t1, "mod/2");
}
return Yap_ArithError(TYPE_ERROR_INTEGER, t2, "mod/2");
}
}
Term
Yap_gmp_mod_big_int(Term t, Int i2)
{
CELL *pt = RepAppl(t);
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "mod/2");
} else {
MP_INT *b = Yap_BigIntOfTerm(t);
MP_INT new;
mpz_init_set_si(&new, i2);
mpz_fdiv_r(&new, b, &new);
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_mod_int_big(Int i1, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "mod/2");
} else {
MP_INT *b = Yap_BigIntOfTerm(t);
/* integer is much smaller */
if (mpz_sgn(b) > 0) {
/* easy case next */
if (i1 > 0) {
/* 2 mod 23 -> 2 */
return MkIntegerTerm(i1);
} else {
MP_INT new;
/* 2 mod -23 -> 21 */
mpz_init_set_si(&new, i1);
mpz_add(&new, &new, b);
return MkBigAndClose(&new);
}
} else {
if (i1 > 0) {
MP_INT new;
/* -2 mod 23 -> 21 */
mpz_init_set_si(&new, i1);
mpz_add(&new, b, &new);
return MkBigAndClose(&new);
} else {
/* -2 mod -23 -> -2 */
return MkIntegerTerm(i1);
}
}
}
}
Term
Yap_gmp_rem_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init(&new);
mpz_tdiv_r(&new, b1, b2);
return MkBigAndClose(&new);
} else {
if (pt1[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t1, "rem/2");
}
return Yap_ArithError(TYPE_ERROR_INTEGER, t2, "rem/2");
}
}
Term
Yap_gmp_rem_big_int(Term t, Int i2)
{
CELL *pt = RepAppl(t);
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "rem/2");
} else {
MP_INT *b = Yap_BigIntOfTerm(t);
MP_INT new;
mpz_init_set_si(&new, i2);
mpz_tdiv_r(&new, b, &new);
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_rem_int_big(Int i1, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "rem/2");
} else {
/* integer is much smaller */
return MkIntegerTerm(i1);
}
}
Term
Yap_gmp_gcd_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT new;
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpz_init_set(&new, b1);
mpz_gcd(&new, &new, b2);
return MkBigAndClose(&new);
} else {
if (pt1[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t1, "gcd/2");
}
return Yap_ArithError(TYPE_ERROR_INTEGER, t2, "gcd/2");
}
}
Term
Yap_gmp_gcd_int_big(Int i, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] != BIG_INT) {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "gcd/2");
} else {
/* integer is much smaller */
if (i > 0) {
return MkIntegerTerm(mpz_gcd_ui(NULL,Yap_BigIntOfTerm(t),i));
} else if (i == 0) {
return MkIntTerm(0);
} else {
return MkIntegerTerm(mpz_gcd_ui(NULL,Yap_BigIntOfTerm(t),-i));
}
}
}
Term
Yap_gmp_float_to_big(Float v)
{
MP_INT new;
mpz_init_set_d(&new, v);
return MkBigAndClose(&new);
}
Float
Yap_gmp_to_float(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return mpz_get_d(b);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return mpq_get_d(b);
}
}
Term
Yap_gmp_add_float_big(Float d, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return MkFloatTerm(d+mpz_get_d(b));
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return MkFloatTerm(d+mpq_get_d(b));
}
}
Term
Yap_gmp_sub_float_big(Float d, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return MkFloatTerm(d-mpz_get_d(b));
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return MkFloatTerm(d-mpq_get_d(b));
}
}
Term
Yap_gmp_sub_big_float(Term t, Float d)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return MkFloatTerm(mpz_get_d(b)-d);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return MkFloatTerm(mpq_get_d(b)-d);
}
}
Term
Yap_gmp_mul_float_big(Float d, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return MkFloatTerm(d*mpz_get_d(b));
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return MkFloatTerm(d*mpq_get_d(b));
}
}
Term
Yap_gmp_fdiv_float_big(Float d, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return MkFloatTerm(d/mpz_get_d(b));
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return MkFloatTerm(d/mpq_get_d(b));
}
}
Term
Yap_gmp_fdiv_big_float(Term t, Float d)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return MkFloatTerm(mpz_get_d(b)/d);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return MkFloatTerm(mpq_get_d(b)/d);
}
}
Term
Yap_gmp_exp_int_int(Int i1, Int i2)
{
MP_INT new;
mpz_init_set_si(&new, i1);
mpz_pow_ui (&new, &new, (unsigned long int)i2);
return MkBigAndClose(&new);
}
Term
Yap_gmp_exp_big_int(Term t, Int i)
{
CACHE_REGS
MP_INT new;
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
if (i > 0) {
mpz_init(&new);
mpz_pow_ui (&new, b, (unsigned long int)i);
} else {
MP_INT new;
if (i==0) return MkIntTerm(1);
mpz_init_set_si(&new, i);
mpz_powm (&new, b, &new, b);
}
return MkBigAndClose(&new);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
Float dbl = mpq_get_d(b);
return MkFloatTerm(pow(dbl,i));
}
}
Term
Yap_gmp_exp_int_big(Int i, Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return Yap_ArithError(RESOURCE_ERROR_HUGE_INT, t, "^/2");
} else {
MP_INT *b = Yap_BigIntOfTerm(t);
Float dbl = mpz_get_d(b);
return MkFloatTerm(pow(i,dbl));
}
}
Term
Yap_gmp_exp_big_big(Term t1, Term t2)
{
CACHE_REGS
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
Float dbl1, dbl2;
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
return Yap_ArithError(RESOURCE_ERROR_HUGE_INT, t2, "^/2");
} else {
if (pt1[1] != BIG_INT) {
dbl1 = mpz_get_d(Yap_BigIntOfTerm(t1));
} else {
dbl1 = mpq_get_d(Yap_BigRatOfTerm(t1));
}
if (pt2[2] != BIG_INT) {
dbl2 = mpz_get_d(Yap_BigIntOfTerm(t2));
} else {
dbl2 = mpq_get_d(Yap_BigRatOfTerm(t2));
}
return MkFloatTerm(pow(dbl1,dbl2));
}
}
Term
Yap_gmp_big_from_64bits(YAP_LONG_LONG i)
{
char s[64];
MP_INT new;
#ifdef _WIN32
snprintf(s,64,"%I64d", (long long int)i);
#elif HAVE_SNPRINTF
snprintf(s, 64, "%lld", (long long int)i);
#else
sprintf(s, "%lld", (long long int)i);
#endif
mpz_init_set_str (&new, s, 10);
return MkBigAndClose(&new);
}
Term
Yap_gmq_rdiv_int_int(Int i1, Int i2)
{
MP_RAT new;
mpq_init(&new);
if (i2 < 0) {
i1 = -i1;
i2 = -i2;
}
mpq_set_si(&new, i1, i2);
mpq_canonicalize(&new);
return MkRatAndClose(&new);
}
Term
Yap_gmq_rdiv_int_big(Int i1, Term t2)
{
MP_RAT new;
CELL *pt2 = RepAppl(t2);
mpq_init(&new);
mpq_set_si(&new, i1, 1L);
if (pt2[1] == BIG_INT) {
MP_RAT new2;
MP_INT *b = Yap_BigIntOfTerm(t2);
mpq_init(&new2);
mpq_set_z(&new2, b);
mpq_div(&new,&new,&new2);
mpq_clear(&new2);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t2);
mpq_div(&new,&new,b);
}
return MkRatAndClose(&new);
}
Term
Yap_gmq_rdiv_big_int(Term t1, Int i2)
{
MP_RAT new;
CELL *pt1 = RepAppl(t1);
mpq_init(&new);
mpq_set_si(&new, i2, 1L);
if (pt1[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t1);
MP_RAT new2;
mpq_init(&new2);
mpq_set_z(&new2, b);
mpq_div(&new,&new2,&new);
mpq_clear(&new2);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t1);
mpq_div(&new,b,&new);
}
return MkRatAndClose(&new);
}
Term
Yap_gmq_rdiv_big_big(Term t1, Term t2)
{
MP_RAT new;
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
mpq_init(&new);
if (pt1[1] == BIG_INT) {
MP_INT *b1 = Yap_BigIntOfTerm(t1);
mpq_set_z(&new, b1);
} else {
MP_RAT *b1 = Yap_BigRatOfTerm(t1);
mpq_set(&new, b1);
}
if (pt2[1] == BIG_INT) {
MP_RAT new2;
MP_INT *b2 = Yap_BigIntOfTerm(t2);
mpq_init(&new2);
mpq_set_z(&new2, b2);
mpq_div(&new,&new,&new2);
mpq_clear(&new2);
} else {
MP_RAT *b2 = Yap_BigRatOfTerm(t2);
mpq_div(&new,&new,b2);
}
return MkRatAndClose(&new);
}
Term
Yap_gmp_fdiv_int_big(Int i1, Term t2)
{
CACHE_REGS
MP_RAT new;
MP_RAT *b1, *b2;
MP_RAT bb1, bb2;
Float d;
CELL *pt2 = RepAppl(t2);
b1 = &bb1;
mpq_init(b1);
mpq_set_si(b1, i1, 1L);
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_div(&new, b1, b2);
d = mpq_get_d(&new);
mpq_clear(&new);
return MkFloatTerm(d);
}
Term
Yap_gmp_fdiv_big_int(Term t2, Int i1)
{
CACHE_REGS
MP_RAT new;
MP_RAT *b1, *b2;
MP_RAT bb1, bb2;
Float d;
CELL *pt2 = RepAppl(t2);
b1 = &bb1;
mpq_init(b1);
mpq_set_si(b1, i1, 1L);
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_div(&new, b2, b1);
d = mpq_get_d(&new);
mpq_clear(&new);
return MkFloatTerm(d);
}
Term
Yap_gmp_fdiv_big_big(Term t1, Term t2)
{
CACHE_REGS
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
MP_RAT new;
MP_RAT *b1, bb1;
MP_RAT *b2, bb2;
Float d;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
mpq_init(&new);
mpq_div(&new, b1, b2);
d = mpq_get_d(&new);
mpq_clear(&new);
return MkFloatTerm(d);
}
int
Yap_gmp_cmp_big_int(Term t, Int i)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return mpz_cmp_si(b,i);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
return mpq_cmp_si(b,i,1);
}
}
int
Yap_gmp_cmp_big_float(Term t, Float d)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return mpz_cmp_d(b,d);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
Float d1 = mpq_get_d(b);
if (d1 < d)
return -1;
if (d1 == d)
return 0;
return 1;
}
}
int
Yap_gmp_cmp_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
return mpz_cmp(b1, b2);
} else {
MP_RAT *b1 = NULL, bb1;
int f1 = FALSE;
MP_RAT *b2 = NULL, bb2;
int f2 = FALSE;
if (pt1[1] == BIG_INT) {
b1 = &bb1;
f1 = TRUE;
mpq_init(b1);
mpq_set_z(b1, Yap_BigIntOfTerm(t1));
} else {
b1 = Yap_BigRatOfTerm(t1);
}
if (pt2[1] == BIG_INT) {
b2 = &bb2;
f2 = TRUE;
mpq_init(b2);
mpq_set_z(b2, Yap_BigIntOfTerm(t2));
} else {
b2 = Yap_BigRatOfTerm(t2);
}
if (f1)
mpq_clear(b1);
if (f2)
mpq_clear(b2);
return mpq_cmp(b1, b2);
}
}
int
Yap_gmp_tcmp_big_int(Term t, Int i)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return mpz_cmp_si(b,i);
} else {
return -1;
}
}
int
Yap_gmp_tcmp_big_float(Term t, Float d)
{
return 1;
}
int
Yap_gmp_tcmp_big_big(Term t1, Term t2)
{
CELL *pt1 = RepAppl(t1);
CELL *pt2 = RepAppl(t2);
if (pt1[1] == BIG_INT && pt2[1] == BIG_INT) {
MP_INT *b1 = Yap_BigIntOfTerm(t1);
MP_INT *b2 = Yap_BigIntOfTerm(t2);
return mpz_cmp(b1, b2);
} else {
MP_RAT *b1, *b2;
if (pt1[1] == BIG_INT) {
return 1;
} else if (pt1[1] == BIG_RATIONAL) {
b1 = Yap_BigRatOfTerm(t1);
} else {
return pt1-pt2;
}
if (pt2[1] == BIG_INT) {
return -1;
} else if (pt2[1] == BIG_RATIONAL) {
b2 = Yap_BigRatOfTerm(t2);
} else {
return pt1-pt2;
}
return mpq_cmp(b1, b2);
}
}
Term
Yap_gmp_neg_int(Int i)
{
MP_INT new;
mpz_init_set_si(&new, Int_MIN);
mpz_neg(&new, &new);
return MkBigAndClose(&new);
}
Term
Yap_gmp_neg_big(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
MP_INT new;
mpz_init_set(&new, b);
mpz_neg(&new, &new);
return MkBigAndClose(&new);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_RAT new;
mpq_init(&new);
mpq_neg(&new, b);
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_float_to_rational(Float dbl)
{
MP_RAT new;
mpq_init(&new);
mpq_set_d(&new, dbl);
return MkRatAndClose(&new);
}
/* - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
A is rationalize(Float)
Introduced on the suggestion of Richard O'Keefe after the Common Lisp
standard. The algorithm is taken from figure 3 in ``A Rational Rotation
Method for Robust Geometric Algorithms'' by John Canny, Bruce Donald and
Eugene K. Ressler. Found at
http://www.cs.dartmouth.edu/~brd/papers/rotations-scg92.pdf
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - */
#ifndef DBL_EPSILON /* normal for IEEE 64-bit double */
#define DBL_EPSILON 0.00000000000000022204
#endif
Term
Yap_gmp_float_rationalize(Float dbl)
{
Float e0 = dbl, p0 = 0.0, q0 = 1.0;
Float e1 = -1.0, p1 = 1.0, q1 = 0.0;
Float d;
MP_RAT new;
do { Float r = floor(e0/e1);
Float e00 = e0, p00 = p0, q00 = q0;
e0 = e1;
p0 = p1;
q0 = q1;
e1 = e00 - r*e1;
p1 = p00 - r*p1;
q1 = q00 - r*q1;
d = p1/q1 - dbl;
} while(fabs(d) > DBL_EPSILON);
mpz_init_set_d(mpq_numref(&new), p1);
mpz_init_set_d(mpq_denref(&new), q1);
mpq_canonicalize(&new); /* is this needed? */
return MkRatAndClose(&new);
}
Term
Yap_gmp_abs_big(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
MP_INT new;
mpz_init_set(&new, b);
mpz_abs(&new, &new);
return MkBigAndClose(&new);
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_RAT new;
mpq_init(&new);
mpq_abs(&new, b);
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_unot_big(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
MP_INT new;
mpz_init_set(&new, b);
mpz_com(&new, &new);
return MkBigAndClose(&new);
} else {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "#/1");
}
}
Term
Yap_gmp_floor(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return t;
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_INT new;
mpz_init(&new);
mpz_set_q(&new, b);
if (mpq_sgn(b) < 0 && mpz_cmp_si(mpq_denref(b),1L) != 0) {
mpz_sub_ui(&new,&new,1L);
}
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_ceiling(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return t;
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_INT new;
mpz_init(&new);
mpz_set_q(&new, b);
if (mpq_sgn(b) > 0 && mpz_cmp_si(mpq_denref(b),1L) != 0) {
mpz_add_ui(&new,&new,1L);
}
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_round(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return t;
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_INT new;
MP_RAT half, q;
mpq_init(&half);
mpq_init(&q);
mpq_set_ui(&half, 1, 2); /* 1/2 */
if ( mpq_sgn(b) > 0 )
mpq_add(&q, b, &half);
else {
mpq_sub(&q, b, &half);
}
mpz_init(&new);
mpz_set_q(&new, &q);
mpq_clear(&half);
mpq_clear(&q);
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_trunc(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return t;
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_INT new;
int sgn = mpq_sgn(b);
if (sgn)
mpq_neg(b, b);
mpz_init(&new);
mpz_set_q(&new, b);
if (sgn) {
mpq_neg(b, b);
mpz_neg(&new, &new);
}
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_float_fractional_part(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return Yap_ArithError(TYPE_ERROR_FLOAT, t, "X is float_fractional_part(%f)", FloatOfTerm(t));
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_RAT new;
mpq_init(&new);
mpz_tdiv_q(mpq_numref(&new),
mpq_numref(b),
mpq_denref(b));
mpz_set_ui(mpq_denref(&new), 1);
mpq_sub(&new, b, &new);
return MkRatAndClose(&new);
}
}
Term
Yap_gmp_float_integer_part(Term t)
{
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return Yap_ArithError(TYPE_ERROR_FLOAT, t, "X is float_integer_part(%f)", FloatOfTerm(t));
} else {
MP_RAT *b = Yap_BigRatOfTerm(t);
MP_INT new;
mpz_init(&new);
mpz_tdiv_q(&new,
mpq_numref(b),
mpq_denref(b));
return MkBigAndClose(&new);
}
}
Term
Yap_gmp_sign(Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
return MkIntegerTerm(mpz_sgn(Yap_BigIntOfTerm(t)));
} else {
return MkIntegerTerm(mpq_sgn(Yap_BigRatOfTerm(t)));
}
}
Term
Yap_gmp_lsb(Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *big = Yap_BigIntOfTerm(t);
if ( mpz_sgn(big) <= 0 ) {
return Yap_ArithError(DOMAIN_ERROR_NOT_LESS_THAN_ZERO, t,
"lsb/1 received negative bignum");
}
return MkIntegerTerm(mpz_scan1(big,0));
} else {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "lsb");
}
}
Term
Yap_gmp_msb(Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *big = Yap_BigIntOfTerm(t);
if ( mpz_sgn(big) <= 0 ) {
return Yap_ArithError(DOMAIN_ERROR_NOT_LESS_THAN_ZERO, t,
"msb/1 received negative bignum");
}
return MkIntegerTerm(mpz_sizeinbase(big,2));
} else {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "popcount");
}
}
Term
Yap_gmp_popcount(Term t)
{
CACHE_REGS
CELL *pt = RepAppl(t);
if (pt[1] == BIG_INT) {
MP_INT *big = Yap_BigIntOfTerm(t);
if ( mpz_sgn(big) <= 0 ) {
return Yap_ArithError(DOMAIN_ERROR_NOT_LESS_THAN_ZERO, t,
"popcount/1 received negative bignum");
}
return MkIntegerTerm(mpz_popcount(big));
} else {
return Yap_ArithError(TYPE_ERROR_INTEGER, t, "popcount");
}
}
char *
Yap_mpz_to_string(MP_INT *b, char *s, size_t sz, int base)
{
if (s) {
size_t size = mpz_sizeinbase(b, base);
if (size+2 > sz) {
return NULL;
}
return mpz_get_str (s, base, b);
}
return NULL;
}
char *
Yap_gmp_to_string(Term t, char *s, size_t sz, int base)
{
if (RepAppl(t)[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
if (s) {
size_t size = mpz_sizeinbase(b, base);
if (size+2 > sz) {
return NULL;
}
}
return mpz_get_str (s, base, b);
} else if (RepAppl(t)[1] == BIG_RATIONAL) {
MP_RAT *b = Yap_BigRatOfTerm(t);
size_t pos;
size_t siz =
mpz_sizeinbase(mpq_numref(b), base)+
mpz_sizeinbase(mpq_denref(b), base)+
8;
if (s) {
if (siz > sz) {
return NULL;
}
} else {
if (!(s = malloc(siz)))
return NULL;
}
strncpy(s,"rdiv(",sz);
pos = strlen(s);
mpz_get_str (s+pos, base, mpq_numref(b));
pos = strlen(s);
s[pos] = ',';
mpz_get_str (s+(pos+1), base, mpq_denref(b));
pos = strlen(s);
s[pos] = ')';
}
return s;
}
size_t
Yap_gmp_to_size(Term t, int base)
{
if (RepAppl(t)[1] == BIG_INT) {
MP_INT *b = Yap_BigIntOfTerm(t);
return mpz_sizeinbase(b, base);
} else if (RepAppl(t)[1] == BIG_RATIONAL) {
MP_RAT *b = Yap_BigRatOfTerm(t);
return
mpz_sizeinbase(mpq_numref(b), base)+
mpz_sizeinbase(mpq_denref(b), base)+
8;
}
return 1;
}
int
Yap_term_to_existing_big(Term t, MP_INT *b)
{
if (IsVarTerm(t))
return FALSE;
if (IsIntegerTerm(t)) {
mpz_set_si(b,IntegerOfTerm(t));
return TRUE;
}
if (IsBigIntTerm(t)) {
if (RepAppl(t)[1] != BIG_INT)
return FALSE;
mpz_set(b,Yap_BigIntOfTerm(t));
return TRUE;
}
return FALSE;
}
int
Yap_term_to_existing_rat(Term t, MP_RAT *b)
{
if (IsVarTerm(t))
return FALSE;
if (IsIntegerTerm(t)) {
mpq_set_si(b, IntegerOfTerm(t), 1);
return TRUE;
}
if (IsBigIntTerm(t)) {
CELL flag = RepAppl(t)[1];
if (flag == BIG_INT) {
mpq_set_z(b, Yap_BigIntOfTerm(t));
return TRUE;
}
if (flag == BIG_RATIONAL) {
mpq_set(b, Yap_BigRatOfTerm(t));
return TRUE;
}
}
return FALSE;
}
#endif